Anamosa Weather in September

What's the weather like in Anamosa (Iowa) in September 2025?

The climate in Anamosa during September can be summarized as mild and a little damp.

September is in the fall / autumn in Anamosa and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 24°C (75°F), whilst at night 11°C (53°F) is normal.

Anamosa weather averages (imperial / metric)
Daytime temperature 23.6°C 74.5°F
Nightly temperature 11.4°C 52.5°F
Average temperature 17.5°C 63.5°F
Daily sunshine 8.3 hrs
Avg rainfall 97 mm 3.8 ins
Rainy days 9 days
Sea temperature 18.1°C 64.6°F
Humidity 74%
Windspeed 14.8kph 9 mph

On average September is the 4th wettest month of the year in Anamosa with around 97mm 3.8 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.3 hours of sunshine per day.

September temperatures in Anamosa

Anamosa average temperature in September

September rainfall

Anamosa average rain in September

September hourly sunshine

Anamosa average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Anamosa in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Anamosa weather stats

Anamosa weather statistics
Hottest month: July 29.1°C 84.4°F
Driest month: February 27mm 1.1ins
Sunniest month: July 11hrs
Coldest month: January -3.5°C 25.7°F
Wettest month: June 110mm 4.3ins
Map showing location of Anamosa (42.10834, -91.28516) Anamosa map pin © Google

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